.grid div {
    text-align: center;
    vertical-align: middle;
    line-height: 40px;
  }
  .show-block {
    margin: 20px 0;
  }
  .height1 {
    height: 60px;
  }
  .height2 {
    height: 40px;
  }
  .height3 {
    height: 80px;
  }
  .height4 {
    height: 50px;
  }
  .color1 {
    background: #00bfff;
    color: white;
  }
  .color2 {
    background: #0e77ca;
    color: white;
  }